File Content Extraction 25.1
Filter SDK C Programming Guide

# fpOpenStream()

This function opens a stream for filtering.

DEPRECATED: The `fpOpenStream()` function is deprecated in KeyView 23.2.0 and later. OpenText recommends that you create a `KVDocument` to represent each document, by calling fpOpenDocumentFromStream().

You only need to call `fpOpenStream()` if you want to use deprecated functions, such as fpCanFilterStream() and fpFilterStream(), that require a stream context.

This function is still available for existing implementations, but it might be incompatible with new functionality and might be removed in future.

## Syntax

    void * pascal fpOpenStream(
        KVFilterSession   session,
        KVInputStream    *pInput );

## Arguments

`session` | A Filter session that you initialized by calling fpInit().
`pInput` | A pointer to the developer-assigned instance of KVInputStream. The structure `KVInputStream` defines the input stream that contains the source.

## Returns

- If the call is successful, the return value is a `void *` pointer passed to fpFilterStream(), fpCanFilterStream(), and fpCloseStream().
- If the call is unsuccessful, the return value is `NULL`.

## Discussion

- Before you call this function, you must create an input stream either by using the fpFileToInputStreamCreate() function, or by using code similar to the coding example in the Filter sample program.
- After filtering is complete, call fpCloseStream() to free the memory allocated by this function.

Copyright 1997-2024 Open Text
Version 25.1 | Last updated January 2025

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Product: File Content Extraction 25.1

Topic Title: fpOpenStream()